Bikin Gani ko Sallar Gani a Harshen Hausa, bikin gargajiya ne na shekara-shekara da akasarin masarautu hudu ke yi a Arewacin Najeriya wadanda suka hada da Masarautar Borno, Masarautar Hadejia, Masarautar Daura, da Masarautar Gumel. Ana gudanar da wannan biki kamar yadda ake gudanar da bikin hawan sallah karama da kuma babbar sallah wato sallar layya.